Where does diffusion of oxygen and carbon dioxide take place in the lungs?

a. alveoli and capillaries

b. bronchi and thorax

c. cilia and pleura

d. epiglottis and larynx

A strand of hair is composed of

What happens to certain nutrient molecules after they pass into muscle cells? A. They are replicated in the nucleus B. They are acted on by enzymes and release the energy they contain. c. They are changed into tissues and organs in the cytoplasm. D.

An advantage of sexual reproduction over asexual reproduction is that sexual reproduction A) Takes less time B) Requires more time C) Provides genetic diversity D) Produces identical offspring

A patient with arthritis is on nsaid therapy. what should be evaluated by the nurse to determine the effectiveness of nsaid therapy?

What are the steps of evaporated water through the water cycle

Uit flies are commonly used in genetic investigations that focus on traits passed from parents to offspring over several generations. What can you infer is the reason fruit flies are the most commonly used organism for this type of investigation?

5 potential causes of Microevolution

Delia is interested in finding ways to cure diseases. Which of the following career fields would best suit Delia's interest? animal biology cytology nuclear biology zoology

The purpose of a mordant in the Gram stain is to: make gram-negative cells visible. prevent the crystal violet from leaving the cells. make the flagella visible. make the bacterial cells larger. remove the simple stain.

Nicolas Steno (1638-1686) recognized that fossilized shark teeth were formed from actual prehistoric shark teeth.